Furnace.



. v Patented Sept. 17, I901. J. DDWIHNG & H. G. WILLETTS.

F U R N A0 E.

(Application filed Apr. 16; 1901.)

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No. 682,843. Patented Sept. l7, 19m. J. nownms & u. a. WILLETTS.

- FURNACE.

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- No. 682,843. I, Patented Sept. l7, 190i.

J. DOWNING & H. G. WILLETTS.

' F U R N A C E (Application filed Apr. 16, 1901.)

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THE warns PEYCRS no. PHOTD-UTND., WASHINGTON. o. c

UNITED STATES PATENT OFFICE.

JAMES DOWNING AND HARRYG. .WILLETTS, OF PITTSBURG, PENNSYLVANIA.

FURNACE.

SPECIFICATION forming part of Letters Patent No. 682,843, dated September 17, 1901.

Application filed April 16, 1901- 'To all whom it mwyconccrn:

Be it known that we, JAMES DOWNING and HARRY G. WrLLE'rTs, citizens of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Furnaces, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in furnaces, and is particularly adapted for use in connection with heating purposes.

The invention aims to construct a furnace for heating air; and it-consists of a body portion surrounded by a shell, the shell forming an air-chamber and provided with a suitable air inlet or inlets and in communication with a series of flues for carrying the hot air therefrom to various points when the same has been heated by the furnace and,- furthermore, providing the furnace with a fine for carrying off the smoke and products of combustion, which assists in materially heating the air in the air-chamber.

With the above and other objects in view the invention finally consists in the novel construction, combination, and arrangement of parts to be hereinafter more fully described, and specifically pointed out in the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, and wherein like numerals of reference indicate corresponding parts throughout the several views, in which- Figure 1 isafront elevation of our-improved furnace. Fig. 2 isla vertical sectional view thereof, taken on the line 2 2 of Fig. 3. Fig. 3 is a longitudinal sectional View thereof.

Referring to the drawings by reference-numerals, 1 indicates the front, 2 the side, 3 the end, and 4 the top walls of the furnace, which are supported upon a suitable base 5. The front wall1 andend wall 3 extend above the top 1 and are connected together by means of a dome-shaped cover 6, forming a smoke-chamber 7. The top Wall 4: is provided with a downwardly-extending flange 8 to perdicated by the arrows.

fierial No. 56,087. (No model.)

mit of securing the same to the walls of the furnace, asshown.

The furnace is provided with a bridge-wall 9 at the end of the fire-box 10, which does not extend the. height of the furnace and is further connected to the smoke-deflector 11, which consists of fire-brick and is supported by means of the transversely-extending support 12. The fire-box 10 is provided with a grate 13, which may be of any desirable construction, and the door 14.

Surrounding the furnace, with the exception of the front, is a shell 15, forming a hotair chamber 16 and in communication with a series of fines 17 and provided with an airinlet 18, having the damper 19.

Communicating with each side of the furnace, at the rear end thereof, is a smoke-flue 20, which extends in a longitudinal manner at each side of the furnace within the lower portion of the air-chamber 16 and at the upper part of the furnace extends in a vertical manner, as at 21, the upper end thereof communicating with the smoke-chamber 7, as at 22. The rear of the smoke-chamber 7 is pro? vided with an outlet-flue 23, which extends through the air-chamber 16, as shown, and empties into the atmosphere. The passage of smoke and products of combustion is in- For example, the smoke deflected by the deflector 11 willpass over the top of the same and into the back of the furnace through the flue 20, emptying into the smoke-chamber 7, and thence to the atmosphere through the outlet-flue 23. The smoke and products of combustion assist in materially heating the air in the chamber 16. The arrows in the air-chamber 16 indicate the passage of hot air through the fines. By this arrangement the temperature of the hot air is increased quicker than if the smoke-flue were arranged in the manner shown.

It is thought the many advantages of our improved furnace adapted for use in heating air to be used for heating purposes'can be readily understood from the foregoing description, taken in connection withthe accompanying drawings, and it will be noted that various changes may be made in the details of construction without departing from the general spirit of our invention.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In a furnace, asmoke-deflector, a smokechamber arranged above said deflector, vertical flues arranged on each side of said smokechamber and communicating therewith, horizontal flues connected to said vertical flues extending the length of the furnace and communicating with the interior thereof, an outlet-flue communicating with the smoke-chamher and the atmosphere, a hot-air chamber arranged above the said smoke-chamber, a series of fiues connected to said hot-air chamber, and an air-inlet arranged at the back of the furnace, substantially as described.

2. In a furnace, a horizontally-arranged smoke-deflector, a smoke-chamber, vertical and horizontal flues communicating respectively with the said smoke-chamber and the rear interior of the furnace, a hot-air chamber surrounding said furnace, flues communicating therewith, and a vertical air-inlet located at the rear of the furnace and communicating with the said hot-air chamber, substantially as described.

3. In a furnace, a smoke-deflector, a smokechamber, vertical flues arranged on each side of said chamber and communicating therewith, horizontal flues extending the length of the furnace connected to the lower ends of said vertical fines and communicating with the rear interior of the furnace, a hot-air chamber surrounding said furnace, a flue connected to the said smoke-chamber, and an airinlet arranged at the rear of the furnace and communicating with the hot-air chamber, substantially as described.

In testimony whereof we afiix our signatures in the presence of two witnesses.

JAMES DOWNING. HARRY G. WILLETTS.

Witnesses:

JOHN NoLANn, E. E. POTTER. 

